{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA42-0CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA42-0CA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA42-0CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA42-0CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-1AA42-0CA0, switch disconnector in MCCB design, 4-pole, 125 A continuous rating, 690 V AC / 600 V DC, with undervoltage release (UVR) 120-127 V AC 50/60 Hz, busbar connection, front terminal.","salesMarkdown":"The Siemens 3VA1112-1AA42-0CA0 is a SENTRON switch disconnector in MCCB design — a 4-pole, 125 A rated disconnect that provides visible isolation for a circuit without overload or short-circuit protection. It is built to the IEC 60947-3 standard for switch-disconnectors, meaning its primary job is safe on-load switching and isolation, not protection. The built-in undervoltage release (UVR) is factory-set for 120-127 V AC 50/60 Hz. The UVR does not include a leading contact for delayed dropout; it releases immediately on undervoltage. Connection is via busbar to front terminals, which is the typical arrangement for panel-mounted MCCB-style disconnectors in distribution boards. The front terminals accept busbar connections for the main current circuit. An optional motor drive (field-installable) is available for remote switching. Dimensions: 70 mm depth, 101.6 mm width, 130 mm height. The width of 101.6 mm (4 inches) is the standard 4-pole MCCB footprint for this frame size. ## What it does not include This is a switch disconnector only — it has no overload protection (no thermal or magnetic trip), no short-circuit protection, and no trip indicator. It is not a circuit breaker. It has no auxiliary contacts (0 CO contacts) and no auxiliary switch. Communication function is not present. The part is designed for applications where isolation and on-load switching are required, and overcurrent protection is provided separately upstream.","metaTitle":"Siemens 3VA1112-1AA42-0CA0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens 3VA1112-1AA42-0CA0 SENTRON switch disconnector, 125 A continuous at 40-70 °C, 4-pole, 690 V AC / 600 V DC, with undervoltage release. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","Height":"130 mm","at 40 °C":"125 A","at 45 °C":"125 A","at 50 °C":"125 A","at 55 °C":"125 A","at 60 °C":"125 A","at 65 °C":"125 A","at 70 °C":"125 A","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Switch disconnector","Undervoltage Release":"Yes","Design Of The Product":"in MCCB design","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"38 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Design Of The Auxiliary Switch":"Without","Design Of The Auxiliary Release":"Undervoltage release (UVR)","Insulation Voltage / Rated Value":"800 V","protection class IP / on the front":"IP40","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 V","Product Function / Communication Function":"No","Undervoltage Release With Leading Contact":"No","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","number of CO contacts / for auxiliary contacts":"0","Mechanical Service Life (Operating Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"busbar connection","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=450563&mlfb=3VA1112-1AA42-0CA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA42-0CA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-1AA42-0CA0 and how is it quoted?","answer":"This part is sourced through the Siemens distribution channel and quoted to order against an RFQ. Availability and current pricing are confirmed at the time of quote — we do not list live stock or price publicly."},{"question":"What compliance documentation is available for 3VA1112-1AA42-0CA0?","answer":"As a Siemens SENTRON product, this part is designed to IEC 60947-3 (switch-disconnector standard). The reference code per IEC 81346-2 is Q. Standard documentation includes the manufacturer's declaration of conformity to applicable EU directives (CE), and the part carries the Siemens brand quality. Specific RoHS/REACH declarations and UL file information should be requested at quote time for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA42-0CA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA1112-1AA42-0CA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}